Philodendron hastatum K.Koch & Sello
  • Index Seminum (B) 1854(App.): 7 (1855) 


Notes: Distribution: SE. Brazil

General Description

Hemi-epiphytic vine. Stem green, internodes 1.5-8 cm long. Prophyll 18-25.5 x 4-5 cm, narrowly triangular, pale green. LEAVES: Petiole 13.5-46 cm long. Leaf blade 20-45 x 5-15 cm, narrowly ovate to ovate-triangular, apex rounded to sub-acute, base sagittate with extrorse lobes, distinctly paler on lower surface, chartaceous; anterior division 25.5-32 x 13.5-23 cm, primary lateral veins 5-8 per side; posterior divisions 5-11 x 6-12 cm, acroscopic veins 2 per side, basiscopic vein 1 per side; basal veins 1-3 per side, with one free to base; posterior rib naked for 0.3-0.5 cm. INFLORESCENCE: 1 per floral sympodium; peduncle 3.5-4.5 cm long. Spathe 8.5-12.5 x 2.5-3 cm, ovate, weakly constricted, white outside, cream with dark red base inside. Spadix 7.5-12 cm long, male zone, 3-6 cm long, male sterile zone 0.5-1 cm long, female zone 3.5-4.5 cm long. Flowers: stamens 1-1.2 x 0.8-1 mm; intermediate staminodes 2-4 x 1-2 cm; gynoecium 1-1.5 x 0.8-1 mm, ovoid, cream, ovary with 5-6 locules, ovules 2-5 per locule, placentation sub-basal. INFRUCTESCENCE: Berries immature, 1.5-2.5 x 1-1.5 mm, obovoid; seed 0.8-1 mm long, fusiform.

Habitat

Hemi-epiphytic in tropical forests.

Distribution

Southeastern Brazil, Minas Gerais and Rio de Janeiro states.

Conservation

Endangered (EN), B1 a,b (i,ii,iii,iv); extent of occurrence = 1672 km2. Despite its rather wide extent of occurence, the known populations are found in areas of Atlantic forest near expanding towns or, in the case of the Represa do Grama, near aluminium mining. In Rio de Janeiro, it is protected within the Parque Nacional da Floresta da Tijuca and in the Reserva Biológica do Tinguá.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Brazil Brazil Southeast

  Bibliography

  • 1 Almeida, V.R., Temponi, L.G. & Forzza, R.C. (2005). Araceae da Reserva Biológica da Represa do Grama - Descoberto, Minas gerais, Brasil. Rodriguésia; Revista do Instituto de Biologia Vegetal, Jardim Botânico e Estaçao Biologica do Itatiaya 56: 127-144.
  • 2 Sakuragui, C.M. & Mayo, S.J. (2005). Nomenclature and taxonomy of Philodendron hastatum K.Koch & Sello. Rodriguésia; Revista do Instituto de Biologia Vegetal, Jardim Botânico e Estaçao Biologica do Itatiaya 56: 31-34.
  • 3 Sakuragui, C.M., Mayo, S.J. & Zappi, D.C. (2005). Taxonomic revision of Brazilian species of Philodendron. Kew Bulletin 60: 465-513.
  • 4 Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 5 Sakuragui, C.M., Mayo, S.Joseph & Zappi, D.C. Taxonomic revision of Brazilian species of Philodendron section Macrobelium Kew Bull. 60, (2005).

 Information From

CATE Araceae
http://araceae.e-monocot.org
Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 14 Dec 2011 . 17 Dec 2011.
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eMonocot
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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Sampled Red List Index for Plants
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World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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